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微流控聚焦流液滴产生过程中的力学机制(英文)

Drag-induced breakup mechanism for droplet generation in dripping within flow focusing microfluidics

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【Author】 Ping Wu;Zhaofeng Luo;Zhifeng Liu;Zida Li;Chi Chen;Lili Feng;Liqun He;Department of Thermal Science and Energy Engineering, University of Science and Technology of China;School of Life Sciences, University of Science and Technology of China;Department of Mechanical Engineering, Hong Kong University of Science and Technology;

【机构】 Department of Thermal Science and Energy Engineering, University of Science and Technology of China； School of Life Sciences, University of Science and Technology of China； Department of Mechanical Engineering, Hong Kong University of Science and Technology；

【摘要】 Based on viscous drag-induced breakup mechanism, a simple model was proposed to predict the dripping droplet size as a function of controllable parameters in flow focusing micro devices. The size of thread before breakup was also investigated through laminar flow theory. Experiments and numerical simulations by VOF are carried out simultaneously to validate the theoretical analysis, showing that droplet size decreases rapidly with the increase of the flow rate ratio and capillary number.更多还原

【Abstract】 Based on viscous drag-induced breakup mechanism, a simple model was proposed to predict the dripping droplet size as a function of controllable parameters in flow focusing micro devices. The size of thread before breakup was also investigated through laminar flow theory. Experiments and numerical simulations by VOF are carried out simultaneously to validate the theoretical analysis, showing that droplet size decreases rapidly with the increase of the flow rate ratio and capillary number.更多还原

【关键词】 Microfluidics； Droplet； Dripping； Flow focusing； Thread； Force balance；
【Key words】 Microfluidics； Droplet； Dripping； Flow focusing； Thread； Force balance；

【基金】 Supported by the National Natural Science Foundation of China(50876100);the Grade A Technology Development Foundation of USTC(ZC9850340103)

【文献出处】 Chinese Journal of Chemical Engineering ,中国化学工程学报(英文版) , 编辑部邮箱 ,2015年01期

【分类号】TQ021.1
【被引频次】5
【下载频次】130

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